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Motor Mount Replacement

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Old Jan 15, 2007 | 04:56 PM
  #1  
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Default Motor Mount Replacement

The girl gives me a strange vibration from the body when I jump on her, and not in a good way, so I am thinking one or both motor mounts need replacement.

Per the repair manual I should remove the distributor cap for clearance and lift the engine using a floor jack and block of wood under the oil pan. I am a little worried about lifting on the pan and am thinking I may need to disconnect the exhaust for lifting clearance.

Does anyone have any experiences with this little job they can share?

Thanks


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Old Jan 15, 2007 | 05:01 PM
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Replace with solid motor mounts and do one side at a time. You don't have to remove the dist. cap or exhaust.
Bernie
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Old Jan 15, 2007 | 05:02 PM
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The above is how you do it. Just go slow, and go easy.
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Old Jan 15, 2007 | 05:04 PM
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So, lifting on the pan is safe?
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Old Jan 15, 2007 | 05:11 PM
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Originally Posted by Clint's C3
So, lifting on the pan is safe?
I used a piece of wood (2X4) beween my jack and the oil pan to spread the load a little, but otherwise, yes.

I did this replacement last year. The first mount was pretty easy, the second a nightmare. I just couldn't get the bolts all lined up. if you end up with the same problem, Jughead suggested that i loosen the block to mount bolts, put the large bolt in place, then tighten the bolts up. This was all it took to make mine work.
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Old Jan 15, 2007 | 05:19 PM
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Originally Posted by Clint's C3
So, lifting on the pan is safe?
solid mounts are the best, lift one side at a time, use a piece of wood (nice and chunky) as adviced, second mount could be more difficult and maybe some will be needed...
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Old Jan 15, 2007 | 05:20 PM
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Originally Posted by CA-Legal-Vette
I used a piece of wood (2X4) beween my jack and the oil pan to spread the load a little, but otherwise, yes.

I did this replacement last year. The first mount was pretty easy, the second a nightmare. I just couldn't get the bolts all lined up. if you end up with the same problem, Jughead suggested that i loosen the block to mount bolts, put the large bolt in place, then tighten the bolts up. This was all it took to make mine work.
That sounds like a plan, one side at a time and I will start all the bolts before I tighten things up.

Thanks,
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Old Jan 15, 2007 | 06:16 PM
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Originally Posted by Clint's C3
That sounds like a plan, one side at a time and I will start all the bolts before I tighten things up.

Thanks,

You gonna venture into the realm of solid mounts or stick with rubber or poly?
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Old Jan 15, 2007 | 08:20 PM
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What are the benefits/drawbacks of solid motor mounts Vs. rubber or poly? Rubber/poly dampens engine vibration more but solid is stronger?
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Old Jan 15, 2007 | 08:22 PM
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Originally Posted by stock76
What are the benefits/drawbacks of solid motor mounts Vs. rubber or poly? Rubber/poly dampens engine vibration more but solid is stronger?

Yeah, solid just means the motor dampens through the frame...hence, no movement.

Rubber will go bad over time, poly is just more tolerant to years of abuse.
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Old Jan 15, 2007 | 09:11 PM
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How bout a quick linky to a good poly mount....

Insert link here____________________________________ _______
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Old Jan 15, 2007 | 09:16 PM
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Originally Posted by sperkins
How bout a quick linky to a good poly mount....

Insert link hereWWW.GOODPOLYMOUNTFORCHEVYENGINEDOTCOM
DONE !!!

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Old Jan 15, 2007 | 09:24 PM
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Originally Posted by MYBAD79
DONE !!!


Broken linky...
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Old Jan 15, 2007 | 09:33 PM
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You guy's have me thinking. I wonder if i should go with solid mounts when i drop my Ram Jet 350 in next week.
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Old Jan 15, 2007 | 09:38 PM
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Originally Posted by 69 Vette
You guy's have me thinking. I wonder if i should go with solid mounts when i drop my Ram Jet 350 in next week.

I would do that from what I hear...in fact, when I drop in my 405 I'll be using solids.
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Old Jan 15, 2007 | 09:38 PM
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If you lift the engine I'd just take the dist. off all the way. Guy in the Navy hobby shop had to swap motors in his 3rd gen camaro and while lifting the old motor out it leaned back and killed that poor little distributor. Just a little knock on the firewall and broke the shaft. Like they said, nice and easy! Good luck!
-CR
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Old Jan 15, 2007 | 09:40 PM
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I use poly on the drivers side (lift from torque) and rubber on the pass side. I'd think solid mounts would transmit more noise?
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Old Jan 15, 2007 | 09:49 PM
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Originally Posted by shafrs3
I use poly on the drivers side (lift from torque) and rubber on the pass side. I'd think solid mounts would transmit more noise?

A lot of forum members have made the swap and none say it's noisy. Also, they say it feels tighter...that when you mash the go pedal...you feel the power without a damping sensation.
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Old Jan 15, 2007 | 10:08 PM
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Originally Posted by Durango_boy
A lot of forum members have made the swap and none say it's noisy. Also, they say it feels tighter...that when you mash the go pedal...you feel the power without a damping sensation.
.... gawd.... can you please stop now....... now y'all made me think about solid engine mounts



I was going to buy poly mounts - are solid mounts ok for 'normal' driving or is it more like a 'track only' thing ????
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Old Jan 15, 2007 | 10:48 PM
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Originally Posted by Durango_boy
You gonna venture into the realm of solid mounts or stick with rubber or poly?
I am thinking poly. Since this is my daily driver I don't want the vibration of a solid connection from motor to frame.
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